Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 711 · 40 questions

What you do (Bounce, bounce, see): 1. An adult cuts a window near the top on one side of the carton and near the bottom on the other. 2. Tape one mirror at 45° behind each window, the two mirrors facing each other. 3. Look into the bottom window and adjust the mirrors until the view is clear. 4. Peep over a table or wall — never point it at the Sun.

1. 1.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) a ruler (c) a pencil (d) two small mirrors
2. 2.True or false: a shiny steel plate reflects light well. (a) False (b) True
3. 3.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
5. 5.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) True (b) False
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
8. 8.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) two pictures (d) only darkness
9. 9.True or false: vinegar is needed for the periscope. (a) True (b) False
10. 10.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) a mirror (d) dark soil
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the object we look at (c) the angle of the mirrors (d) the same mirrors
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same mirrors (c) the same carton (d) the same light
13. 13.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 10 degrees (c) 180 degrees (d) 90 degrees
14. 14.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
15. 15.True or false: dark soil reflects light well. (a) True (b) False
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
17. 17.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) False (b) True
18. 18.True or false: a pencil is not needed for the periscope. (a) True (b) False
19. 19.🧺 Which of these is needed for the periscope? (a) a magnet (b) two small mirrors (c) vinegar (d) turmeric powder
20. 20.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) a dull brick (d) a shiny steel plate
21. 21.True or false: aluminium foil reflects light well. (a) True (b) False
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we measure it (b) we keep it the same (c) we change it
23. 23.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a mirror (d) black cloth
24. 24.True or false: two small mirrors is needed for the periscope. (a) False (b) True
25. 25.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a magnet (c) an empty juice carton (d) two small mirrors
27. 27.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
28. 28.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
29. 29.True or false: still clear water reflects light poorly. (a) True (b) False
30. 30.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) much bigger (d) upside down only
31. 31.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.🧺 Which of these is needed for the periscope? (a) a balloon (b) turmeric powder (c) a pencil (d) a magnet
33. 33.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same mirrors
36. 36.🔭 How many times does light bounce off a mirror in a simple periscope?
37. 37.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) magnetism (d) refraction
38. 38.True or false: turmeric powder is needed for the periscope. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a rough wooden board (d) a mirror
40. 40.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) a friend’s toy (d) the Sun

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